/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package servlets;

import astralmlprocessor.AstralMLCreator;
import astralmlprocessor.XSLTProcessor;
import formulagraph.Texto;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author age
 */
public class GuardarTXT extends HttpServlet {
    
    private static String filePath;

    @Override
    public void init(ServletConfig config) throws ServletException {
        // Obtener un contexto para ubicar los archivos 
        // en la ruta del servidor especificada (FormulaGraph/build/web/xslt-transform)
        filePath = config.getServletContext().getRealPath("/") + "xslt-transform";
    }    
    
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        
        String separador = (String)request.getParameter("separador");
        String sepVal = "";
        if (separador.equals("espacio")) {
            sepVal = " ";
        } else if (separador.equals("tabulador")) {
            sepVal = "\t";            
        } else if (separador.equals("coma")) {
            sepVal = ",";
        } else if (separador.equals("guion")) {
            sepVal = "-";
        } else if (separador.equals("punto")) {
            sepVal = ".";
        } else if (separador.equals("dosPuntos")) {
            sepVal = ":";
        } else if (separador.equals("barraBaja")) {
            sepVal = "_";
        }

        String vertxt = (String)request.getParameter("vertxt");
        String [] filtro = (String[])request.getParameterValues("filtro");
        String [] observador = (String[])request.getParameterValues("observador");
        
        AstralMLCreator.getInstance().savePath(filePath);
        
        String datosTxt = XSLTProcessor.simpleTransform(filePath+"/"+AstralMLCreator.xmlFileName+".xml",
                        filePath+"/astronomy.xsl", filePath+"/astronomy.txt", filtro, observador, sepVal);
        
        if (vertxt == null) {
            response.setContentType("application/octet-stream");
            response.setHeader("Content-Disposition","attachment;filename="+AstralMLCreator.xmlFileName+".txt");

            ServletOutputStream out = response.getOutputStream();

            out.write(datosTxt.getBytes("UTF-8"));

            out.flush();
            out.close();
        } else {
            PrintWriter out = response.getWriter();

            out.print(datosTxt);         
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
